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An Easter Egg is a small secret in games. Easter eggs usually doesn't associate itself with gameplay, but players usually find easter eggs due to interest in them. Easter eggs are secret stuff that was left in the game.
Examples of Easter Eggs in Mario games:
- In Donkey Kong 64, a picture of a strange frog appears.
- In the Atari 800 version of Donkey Kong, losing Mario's last life because of a fall, while in a point range of 33,000-33,900 (thus ensuring a new high score), and highlighting a Fireball in the difficulty selection will cause the initials of the port's developer, Landon Dyer, to appear in the title screen while the player waits for the attract mode to start up again.
- In Super Smash Bros Brawl, a picture of a cat appears in a house in Pokemon Stadium 2.
- In Super Mario Galaxy 2, three alien like figures appear in the background of Shiverburn Galaxy watching Mario/Luigi (It also appears in the Pull Star planet of Grandmaster Galaxy).
- Donkey Kong Country Returns has various easter eggs:
- In the level Button Bash is found references to Billy Mitchell (A statue with his tie) and to the Three Wise Monkeys.
- In Foggy Fumes, is seen the level 25m of Donkey Kong in the background, further, Mr. Game & Watch appears working in the factory.
- In the options screen, a coral reef is shaped like the Rareware symbol.
- In Wonky Waterway, the last part shows a 8-bit Donkey Kong statue holding a Wii Remote.
- In Clifftop Climb, if the player looks extra hard, they will see a stone-carved portrait of King K. Rool's head.
- In Super Mario Galaxy 2, in Flash Black Galaxy the sillhouette of a windmill can be seen at the very back of the Maze Planet.